Anthem, UnitedHealthcare, Humana, Health Care Service Corp and CVS Health together control more than 38 percent of the health insurance market, according to ValuePenguin, a resource for consumers looking to make more informed financial decisions.
ValuePenguin ranked the biggest health insurance companies in 2020 by market share:
1. Anthem: 10.38 percent
2. UnitedHealthcare Group: 9.32 percent
3. Humana: 7.86 percent
4. Health Care Service Corp.: 5.64 percent
5. CVS Health: 4.92 percent
6. Centene: 4.15 percent
7. WellCare: 3.35 percent
8. MCNA Insurance: 2.54 percent
9. Kaiser Permanente: 2.13 percent
10. Molina Healthcare: 2.10 percent
Note: Market share data was generated using the S&P Global market share tool. Each insurer's market share was based on its total health enrollment during the year.